Since WildFly 8.2.0.Final was just released, the OpenShift WildFly cartridge has been updated as well. The WildFly cartridge is now a registered cartridge on OpenShift, which means it's easier than ever to create new apps from the command line! If you don't already have the OpenShift command line tools, follow the quick instructions here to install them. Then, simply use the following command to create a new WildFly 8.2.0.Final app:
rhc app create <APP> jboss-wildfly-8
That's it, no need to reference a long URL anymore in the creation command!
For more information on how to access your application, take a look at the cartridge documentation. Enjoy!